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_________ rock is formed underground when magma slowly cools and hardens, forming crystals.

Extrusive
Intrusive
Conglomerate
Clastic

1 Answer

5 votes

Answer:

Instrusive

Step-by-step explanation:

An extrusive rock forms above ground when lava rapidly cools. Instrusive rock is formed below ground where there is magma that cools and hardens.

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